NSO Level 1- Science Olympiad (SOF) Class 12: Questions 18 - 20 of 60

Access detailed explanations (illustrated with images and videos) to 60 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time!

View Sample Explanation or View Features.

Rs. 100.00 or

How to register?

Question number: 18

» Biology » Genetics and Evolution

Edit
MCQ▾

Question

3’ GCT CCG AGA GGA GGC AGA 5’ is the nucleotide sequence on a gene which undergoes transcription. What will be the sequence of bases on mRNA and tRNA?

Choices

Choice (4)Response

a.

AGC TAC TTA CTC ACC ATA and AGC UAC UUA CUC ACC AUA

b.

CGU ACA GCC UGA UAU ATC and GCA UGU CGG ACU AUA

c.

CGA GGC UCU CCU CCG UCU and GCU CCG AGA GGA GGC AGA

d.

UUU ACG CGC UAU UGA UAU and AAA UGC GCG AUA UAU UGA

Question number: 19

» Biology » Biotechnology

Edit
MCQ▾

Question

Multiple Ovulation Embryo Transfer Technology is said to be useful in animal breeding, what is the reason behind this?

Choices

Choice (4)Response

a.

Herd size can be increased in a short time

b.

Used to breed unrelated animals with no common ancestors for almost 5 years

c.

Helps to remove less desirable genes and accumulate those which are superior

d.

Helps in developing new stable breeds that are superior to existing breeds

Question number: 20

» Biology » Reproduction

Edit
MCQ▾

Question

There are low failure rates of contraceptives Estrogens and progestins. How do they work?

Choices

Choice (4)Response

a.

Preventing implantation of blastocyst

b.

Preventing ovulation by suppressing LH surge

c.

Preventing sperm from entering uterus

d.

Preventing sperm from reaching egg

Developed by: